Randall Garrett 
Anything You Can Do [EPUB ebook] 

The Alien was really alien—and Earth was faced with a strange problem indeed. They had to have a superman. And there weren’t any. So…. _________ Randall Garrett was an American science fiction and fantasy author. He was a prolific contributor to Astounding and other science fiction magazines of the 1950s and 1960s. He instructed Robert Silverberg in the techniques of selling large quantities of action-adventure science fiction, and collaborated with him on two novels about Earth bringing civilization to an alien planet.